import { describe, expect, it } from 'vitest'

import {
  NAME_CARD_SLOT,
  TEAM_CARD_LABEL,
  TEAM_CARD_NAME_BANNER,
  TEAM_CARD_NAME_SLOT,
  getCardModel,
  type CardRect,
} from '@/lib/cardModels'
import { fitCardName } from '@/lib/cardNameFit'
import {
  centerCardPhotoTransform,
  frameCardPhotoOnBbox,
  type CardPhotoSize,
} from '@/lib/cardPhotoTransform'
import {
  createCardMeasure,
  drawCardName,
  renderNameCard,
  renderPhotoCard,
  renderTeamCard,
  type CardDrawContext,
} from '@/lib/cardRender'

type DrawCall = { image: unknown; dx: number; dy: number; dw: number; dh: number }
type TextCall = { text: string; x: number; y: number }
type RectCall = { x: number; y: number; width: number; height: number }
type OpCall = { op: string; args: number[] }

const fontSizeFrom = (font: string): number => {
  const match = /(\d+(?:\.\d+)?)px/.exec(font)
  return match ? Number(match[1]) : 0
}

const createFakeContext = () => {
  const drawCalls: DrawCall[] = []
  const textCalls: TextCall[] = []
  const rectCalls: RectCall[] = []
  const ops: OpCall[] = []

  const ctx: CardDrawContext = {
    font: '',
    fillStyle: '',
    textAlign: 'start',
    textBaseline: 'alphabetic',
    drawImage: (image, dx, dy, dw, dh) => {
      drawCalls.push({ image, dx, dy, dw, dh })
    },
    fillRect: (x, y, width, height) => {
      rectCalls.push({ x, y, width, height })
    },
    fillText: (text, x, y) => {
      textCalls.push({ text, x, y })
    },
    measureText: (text) => {
      const size = fontSizeFrom(ctx.font)
      return {
        width: text.length * size * 0.6,
        actualBoundingBoxAscent: size * 0.72,
        actualBoundingBoxDescent: size * 0.2,
      }
    },
    save: () => {
      ops.push({ op: 'save', args: [] })
    },
    restore: () => {
      ops.push({ op: 'restore', args: [] })
    },
    translate: (x, y) => {
      ops.push({ op: 'translate', args: [x, y] })
    },
    rotate: (angle) => {
      ops.push({ op: 'rotate', args: [angle] })
    },
  }

  return { ctx, drawCalls, textCalls, rectCalls, ops }
}

const nameModel = getCardModel('eu-sou-solla')!
const squareModel = getCardModel('perfil-quadrado')!
const teamModel = getCardModel('time-de-voce')!

describe('renderNameCard', () => {
  it('draws the master base first and then the name on the left border', () => {
    const { ctx, drawCalls, textCalls } = createFakeContext()
    const image = { id: 'base' } as unknown as CanvasImageSource
    const fit = renderNameCard(ctx, nameModel, {
      image,
      name: 'João',
      fontFamily: 'Brexter',
      measure: createCardMeasure(ctx, 'Brexter'),
    })

    expect(fit.ok).toBe(true)
    expect(drawCalls).toEqual([{ image, dx: 0, dy: 0, dw: 1080, dh: 1440 }])
    expect(textCalls).toHaveLength(1)
    expect(textCalls[0]!.text).toBe('JOÃO')
    expect(textCalls[0]!.x).toBe(NAME_CARD_SLOT.leftX)
    expect(textCalls[0]!.y).toBeCloseTo(NAME_CARD_SLOT.capTop + NAME_CARD_SLOT.capHeight, 5)
    expect(ctx.fillStyle).toBe(NAME_CARD_SLOT.fill)
    expect(ctx.textAlign).toBe('left')
  })

  it('wraps long names into two lines with baselines inside the free band', () => {
    const { ctx, textCalls } = createFakeContext()
    const fit = renderNameCard(ctx, nameModel, {
      image: { id: 'base' } as unknown as CanvasImageSource,
      name: 'Jorge Solla da Bahia',
      fontFamily: 'Brexter',
      measure: createCardMeasure(ctx, 'Brexter'),
    })

    expect(fit.ok).toBe(true)
    expect(textCalls.map((call) => call.text)).toEqual(['JORGE SOLLA', 'DA BAHIA'])
    expect(textCalls[0]!.y).toBeLessThan(textCalls[1]!.y)
    expect(textCalls[1]!.y).toBeLessThanOrEqual(NAME_CARD_SLOT.maxBlockBottom)
  })

  it('draws the base but no text when the name cannot fit (never cuts silently)', () => {
    const { ctx, drawCalls, textCalls } = createFakeContext()
    const fit = renderNameCard(ctx, nameModel, {
      image: { id: 'base' } as unknown as CanvasImageSource,
      name: 'Bartolomeucostajunior',
      fontFamily: 'Brexter',
      measure: createCardMeasure(ctx, 'Brexter'),
    })

    expect(fit).toEqual({ ok: false, reason: 'too-long' })
    expect(drawCalls).toHaveLength(1)
    expect(textCalls).toHaveLength(0)
  })
})

describe('drawCardName', () => {
  it('draws only the fitted name (no base) on the left border', () => {
    const { ctx, drawCalls, textCalls } = createFakeContext()
    const fit = fitCardName('João', createCardMeasure(ctx, 'Brexter'))
    expect(fit.ok).toBe(true)
    if (!fit.ok) return

    drawCardName(ctx, { fit, fontFamily: 'Brexter' })

    expect(drawCalls).toHaveLength(0)
    expect(textCalls).toEqual([
      { text: 'JOÃO', x: NAME_CARD_SLOT.leftX, y: NAME_CARD_SLOT.capTop + fit.capHeight },
    ])
    expect(ctx.textAlign).toBe('left')
    expect(ctx.fillStyle).toBe(NAME_CARD_SLOT.fill)
  })

  it('left-aligns both wrapped lines inside the free band', () => {
    const { ctx, textCalls } = createFakeContext()
    const fit = fitCardName('Jorge Solla da Bahia', createCardMeasure(ctx, 'Brexter'))
    expect(fit.ok).toBe(true)
    if (!fit.ok) return

    drawCardName(ctx, { fit, fontFamily: 'Brexter' })

    expect(textCalls.map((call) => call.text)).toEqual(['JORGE SOLLA', 'DA BAHIA'])
    expect(textCalls.every((call) => call.x === NAME_CARD_SLOT.leftX)).toBe(true)
    expect(textCalls[0]!.y).toBeLessThan(textCalls[1]!.y)
    expect(textCalls[1]!.y).toBeLessThanOrEqual(NAME_CARD_SLOT.maxBlockBottom)
  })
})

describe('renderTeamCard', () => {
  const window = teamModel.photoWindow!
  const photoSize: CardPhotoSize = { width: 400, height: 600 }
  const transform = frameCardPhotoOnBbox(photoSize, window, {
    x: 80,
    y: 40,
    width: 240,
    height: 420,
  })!

  const render = (name: string) => {
    const fake = createFakeContext()
    const base = { id: 'base' } as unknown as CanvasImageSource
    const overlay = { id: 'overlay' } as unknown as CanvasImageSource
    const photo = { id: 'photo' } as unknown as CanvasImageSource
    const result = renderTeamCard(fake.ctx, teamModel, {
      base,
      overlay,
      photo,
      photoSize,
      transform,
      window,
      name,
      fontFamily: 'Brexter',
      measure: createCardMeasure(fake.ctx, 'Brexter'),
    })

    return { ...fake, result, base, overlay, photo }
  }

  it('draws base → framed photo → overlay, then the label and the name banner', () => {
    const { drawCalls, textCalls, rectCalls, ops, result, base, overlay, photo } = render('Maria')

    expect(result.fit).toMatchObject({ ok: true, lines: ['MARIA'] })
    expect(drawCalls.map((call) => call.image)).toEqual([base, photo, overlay])
    expect(drawCalls[0]).toEqual({ image: base, dx: 0, dy: 0, dw: 1080, dh: 1440 })
    expect(drawCalls[2]).toEqual({ image: overlay, dx: 0, dy: 0, dw: 1080, dh: 1440 })

    // Both banners are drawn as rotated rectangles: two save/restore pairs.
    expect(rectCalls).toHaveLength(2)
    expect(rectCalls[0]).toMatchObject({
      width: TEAM_CARD_LABEL.width,
      height: TEAM_CARD_LABEL.height,
    })
    expect(rectCalls[1]).toMatchObject({
      width: TEAM_CARD_NAME_BANNER.width,
      height: TEAM_CARD_NAME_BANNER.height,
    })
    expect(ops.filter((op) => op.op === 'save')).toHaveLength(2)
    expect(ops.filter((op) => op.op === 'restore')).toHaveLength(2)
    expect(ops.map((op) => op.op)).toEqual([
      'save',
      'translate',
      'rotate',
      'restore',
      'save',
      'translate',
      'rotate',
      'restore',
    ])
    expect(ops[1]!.args).toEqual([TEAM_CARD_LABEL.centerX, TEAM_CARD_LABEL.centerY])
    expect(ops[5]!.args).toEqual([TEAM_CARD_NAME_BANNER.centerX, TEAM_CARD_NAME_BANNER.centerY])

    expect(textCalls.map((call) => call.text)).toEqual(['TIME DE', 'MARIA'])
    expect(textCalls.every((call) => call.x === 0)).toBe(true)
  })

  it('draws the label but no name banner when the name cannot fit (never cuts silently)', () => {
    const { textCalls, rectCalls, result } = render('Bartolomeucostajunior')

    expect(result.fit).toEqual({ ok: false, reason: 'too-long' })
    expect(rectCalls).toHaveLength(1)
    expect(textCalls.map((call) => call.text)).toEqual(['TIME DE'])
  })
})

describe('drawCardName (centered team slot)', () => {
  it('draws the blue banner with the centered name through the same banner helper', () => {
    const { ctx, textCalls, rectCalls, ops } = createFakeContext()
    const fit = fitCardName('Maria', createCardMeasure(ctx, 'Brexter'), TEAM_CARD_NAME_SLOT)
    expect(fit.ok).toBe(true)
    if (!fit.ok) return

    drawCardName(ctx, { fit, fontFamily: 'Brexter', slot: TEAM_CARD_NAME_SLOT })

    expect(rectCalls).toEqual([
      {
        x: -TEAM_CARD_NAME_BANNER.width / 2,
        y: -TEAM_CARD_NAME_BANNER.height / 2,
        width: TEAM_CARD_NAME_BANNER.width,
        height: TEAM_CARD_NAME_BANNER.height,
      },
    ])
    expect(ops).toEqual([
      { op: 'save', args: [] },
      { op: 'translate', args: [TEAM_CARD_NAME_BANNER.centerX, TEAM_CARD_NAME_BANNER.centerY] },
      { op: 'rotate', args: [(TEAM_CARD_NAME_BANNER.rotationDeg * Math.PI) / 180] },
      { op: 'restore', args: [] },
    ])
    expect(textCalls).toEqual([{ text: 'MARIA', x: 0, y: fit.capHeight / 2 }])
    expect(ctx.fillStyle).toBe('#ffffff')
  })
})

describe('renderPhotoCard', () => {
  it('draws the photo full-bleed under the official overlay', () => {
    const { ctx, drawCalls } = createFakeContext()
    const photo = { id: 'photo' } as unknown as CanvasImageSource
    const frame = { id: 'frame' } as unknown as CanvasImageSource
    const size: CardPhotoSize = { width: 2000, height: 1000 }
    const window: CardRect = squareModel.photoWindow!
    const transform = centerCardPhotoTransform(size, window)

    const clamped = renderPhotoCard(ctx, {
      photo,
      frame,
      photoSize: size,
      frameSize: { width: squareModel.width, height: squareModel.height },
      window,
      transform,
    })

    expect(clamped).toEqual(transform)
    expect(drawCalls).toHaveLength(2)
    expect(drawCalls[0]!.image).toBe(photo)
    expect(drawCalls[1]).toEqual({ image: frame, dx: 0, dy: 0, dw: 1000, dh: 1000 })
    expect(drawCalls[0]!.dx).toBeLessThanOrEqual(window.x)
    expect(drawCalls[0]!.dy).toBeLessThanOrEqual(window.y)
    expect(drawCalls[0]!.dx + drawCalls[0]!.dw).toBeGreaterThanOrEqual(window.x + window.width)
    expect(drawCalls[0]!.dy + drawCalls[0]!.dh).toBeGreaterThanOrEqual(window.y + window.height)
  })
})